Syntheses of the Proposed Structures of Poison-Frog Alkaloids 179 and 207E and Their Inhibitory Effects on Neuronal Nicotinic Acetylcholine Receptors
作者:Naoki Toyooka、Dejun Zhou、Soushi Kobayashi、Hiroshi Tsuneki、Tsutomu Wada、Hideki Sakai、Hideo Nemoto、Toshiyasu Sasaoka、Yasuhiro Tezuka、Shigetoshi Kadota、H. Garraffo、Thomas Spande、John Daly
DOI:10.1055/s-2007-1000831
日期:2008.1
Syntheses of the structures postulated for 179 and 207E, members of a proposed new class of poison-frog alkaloids, 6,7-dehydro-5,8-disubstituted indolizidines, are described. The FT-IR spectrum and GC retention time of the synthetic 207E were different from those of the natural product; consequently the original structure of 207E needs to be revised. It is likely that the position of the double bond is instead at the 7,8-position.
本文介绍了 179 和 207E 假设结构的合成过程,这两种生物碱是一种新的毒蛙生物碱--6,7-脱氢-5,8-二取代的吲哚利嗪类化合物。合成的 207E 的傅立叶变换红外光谱和气相色谱保留时间与天然产物不同;因此需要对 207E 的原始结构进行修改。双键的位置很可能在 7,8 位。